dictionary = {
    '吕红':'数据库',
    '周婷':'线性代数',
    '肖杨':'python',
    '李娟':'数据库',
    '丁锦':'英语',
    '周玲玲':'java',
}
dictionary1 = {
    '赵红':'java',
}
print(dictionary)
print(dictionary1)

dictionary.update(dictionary)
stu_info = {'周婷':'数据库','周婷':'python'}
print(stu_info)

